Srimad Bhagavatam Canto 11, Chapter 20, Text 18

SB 11.20.18

yadarambhesu nirvinno
 viraktah samyatendriyah
abhyasenatmano yogi
 dharayed acalam manah
 
Translation: 
 
A transcendentalist, having become disgusted and hopeless in all endeavors for material happiness, completely controls the senses and develops detachment. By spiritual practice he should then fix the mind on the spiritual platform without deviation.
 
Purport: 
 
The inevitable result of material sense gratification is disappointment and pain that sears the heart. One becomes gradually hopeless and despondent in material life; then, receiving good instructions from the Lord or His devotee, one transforms one’s material disappointment into spiritual success. Actually, Lord Krsna is our only true friend, and this simple understanding can bring one to a new life of spiritual happiness in the company of the Lord.
Srimad Bhagavatam Canto 11, Chapter 20, Text 17
Srimad Bhagavatam Canto 11, Chapter 20, Text 19